Paper-slitting machine.



Nn. 678,999. Patented luly 23, |9ol.

C. W. HOBBS. PAPER SLITTINGMAGHINE.

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Patented July 23, |90I.

C. W. HBBS.

(No' Model.)

PAPER SLITTING MACHINE.

(Application Bled Nov. 15, 1899.)

' 2 Sheets-Sheet 2.

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l UNITED STATES PATENT CEErcE.

CLARENCE W. HOBBS, OF WORCESTER, MASSACHUSETTS.

PAPER-.SLITTING MACHINE.

SPECIFICA TION forming part of Letters Patent No. 678,999, dated July 23, 1901. Application filed November 15V, 1899 Serial No. 73 7,044. (No model.)

To @ZZ whom, t may concern.-

Be it known that I, CLARENCE W. HoEEs,l

a citizen of the United States, residing at Worcester, in the county of Worcester and Commonwealth of Massachusetts, have invented new and useful Improvements in a Paper-Slitting Machine, of which the following is a specification, accompanied by drawings forming a part of the same, in which- Figure 1 represents a top view of a paperslitting machine embodying my invention. Fig. 2 isa side elevation of the same. Fig. 3 is a vertical central sectional View. Fig. 4 is a side elevation of a portion of the machine, showin g the driving mechanism for rotating the feed-rolls. Fig. 5 is a central sectional view of the expansible pulley by which the speed of the feed-rolls is varied.A Fig. 6 represents a view of the mechanism for changing the speed of the machine. Fig. 7 represents a top view of'the beveled disks for bringing the web kof paper into alinement with the cutting mechanism. Fig. 8 is a detached view of the device for imparting tension to the web of paper as itis fed to the machine; and Fig. 9 is a central sectional view of one end of one of the winding-rolls, showing the frictional device forldriving the roll.

Similar numerals refer to similar parts in the different figures.

My invention relates to a machine for slitting a web of paper into narrow strips and rewinding the severed strips into separate coils; and it has for its objects to provide means for varying the speed of the machine, to provide means for withdrawing the paper from the roll independently of the speed of the machine, and also to provide means for alining the paper with the cutting mechanism; and I accomplish these objects by means of the construction and arrangement of parts as hereinafter described, the novel features being point-ed out in the annexed claims.

Referring to the accompanying drawings, 1 1 denote portions of the framework forming the sides of the machine, in which is journaled the main driving-shaft 2, carrying a belt-pulley 3, by which it receives motion through a belt connection with a countershaft. (Not shown.) The driving-shaft 2 carries a gear 4, engaging a gear 5 upon the short shaft 6, journaled in a rocking frame '7, which is pivoted upon the main drivingshaft 2 and is capable of a rocking motion thereon by means of a screw-threaded rod 8, having a swivel connection at 9 with the rocking frame and passing through a nut 10, held by the framework of the machine. The shaft 6 also carries a pair offriction-,disks 11 11, with the edges of each disk inserted between the beveled sides of the pairs of friction-disks 12 12, having a spline connection with a shaft 13, journaled in the sides 1 1 and carrying loosely on its end asprocket-wheel 14. The edges of thefriction-disks l1 11 are held in close frictional contact with the friction-disks 12 12 by means of spiral springs 15 in order to secure sufficient friction between the disks 11 and 12 to cause the rotary motion of the short shaft 6 to be imparted to the shaft 13. The rotation of the shaft 13 is communicated to the sprocket wheel 14 by means of a ratchet-wheel 16, attached to the shaft 13 and engaging a pawl 17, pivoted upon the side of the sprocket-wheel, by which the sprocketwheel is driven'in one direction by the shaft 13. The rotation of the sprocket-wheel 14 is communicated by a chain belt-18 to a sprocket 19 on the lower cutter-shaft 20, which is provided with a series of cutting-disks 21, Fig. 3. Rotated by the shaft 2O through the gears 23 23 is an upper cutter-shaft 24, carrying a series of cutting-disks 25, arranged to act in conjunction with the lower cutters 21, so that the overlapping edges of the upper and lower cutting-disks will sever the web of paper passing between them. The web of paper as it passes between the cutting-disks 21 and 25 is fed and held taut by passing between two pairs of rolls arranged on opposite sides of the cutting-disks, each pair of rolls consisting of a lower roll 26, covered with rubber or some yielding material,and an upper weighted roll 27, said lower rolls 26 being positively driven by means of pinions 28, carried on the ends of the rolls and connected by intermediate pinions 29 with the gear 22 on the lower cutter-shaft 20. The lower cutter-shaft 20 also carries a scored pulley 30, having abelt connection with each of the three windingrolls 3l, 32, and 33, journaled in the three` armed brackets 34. The web of paper to be cut, wound in a roll or coil 35 on the arbor 36, is supported in bearings in the bracket IOO 37, and the paper is withdrawn from the coil by a pair of withdrawing-rolls consisting of the lower driven roll 38 and the upper weighted roll 39. The roll 38 carries on one end and attached thereto a disk 40, having on one side the oblique toothed flange 41, and mounted in a screw-threaded bracket 42 is a screw 43, having its axis in alinement with the axis of the roll 38, with the plain end 44 of the screw entering a concentric recess 45 in the end of' the roll 38. The screw 43 carries a disk 46, having an oblique toothed flange 47 the duplicate of the toothed flange 41, with the teeth of each flange interlocking, as shown in sectional view in Fig. 5, so that the oblique flanges of the two disks form a V- shaped face to receive a belt 48, by which the roll 38 is driven from a scored roll 49, carried upon one of the lower rolls 26. The belt 48 is carried around a tightening-roll 50, adjustably held in lthe framework of the machine. When it is desired to increase the speed of the withdrawing-rolls 38 and 39, the screw 43 is withdrawn, allowing the disk 46 to be moved away from the disk by means of a spiral spring 51, interposed between the disks, thereby decreasing the diameter of the V- shaped groove and causing the roll 39 to be driven at a higher speed. From the withdrawing-rolls 38 and 39 the web of paper is carried over the coil 35 and downwardly between the pair of disks 52 52, adjustably attached by set-screws or other suitable means to a rod 53, and having inner beveled surfaces 54, between which and beneath the rod 53 the web of paper is conducted upwardly between a series of fixed rods 55, held in the brackets 37, and a series of rods 56, carried in the frame 57 and pivoted to links 58 59. The link 58 is pivoted to the bracket 37, and the link 59 is attached to a rod 55, which is capable of rotating in the bracket 37 and carries upon its end a lever-handle 60, provided with a slotted arc 61, by which the lever-handle is fastened in any desired position by means of a clamping-screw 62, held in the bracket 37. From between the fixed and movable rods 55 and 56 the web of paper is carried over the rods 63 and 64 and partially around thej rotating measuring-roll 65, operatively connected in the usual and well-known manner with anysuitable and known registering mechanism contained in a case 66, and from the measuring roll the web is conducted through the pairs of feed-rolls 26 and 27 and is slit lengthwise by the cutters 21 and 25 and the strips wound upon the winding-rolls 31, 32, and 33. The beveled disks 52 are adjusted on the rod 53 to ybring their beveled edges against the edge of the web of paper and bring the web into proper alinement with the cutting-disks, so that the web of ,paper will be fed in uniform alinement to the cutting mechanism. The loosely-suspended loop of paper 67, between the coil 35 and the disks 52, permits the beveled edges of the disks to move the web of paper laterally in order to correct any irregularity in the winding of the coil. As represented in Fig. 3, the web of paper passes in a straight line between the fixed and movable rods 55 and 56; butin case greater tension of the paper is desired the rod 55 is rotated by means of the lever-handle 60, thereby swinging the frame 57 and carrying the rods 56 between the rods 55tl1ereby deflecting the web. of paper from a straight line and giving it a frictional resistance sufcient to produce the desired tension, as represented in Fig. 8.

rlhe operation of my improved slitting-machine is als follows: The coil of paper 35 is supported upon the bracket 37, and the web is conducted between the winding-rolls 38 and 39 and carried from the coil 35 downwardly, forming the loop67 between the beveled disks 52, which have been properly adjusted on the rod 53 to bring-the web of paper into alinement with the cutting mechanism. The web is then carried between the fixed rods 55 and the movable rods 56 and the movable rod 55d is rocked to bring the rods 56 into contact with the paper andv impart a friction sufficient to give the paper the desired tension. The web is then, carried over the rod 63, around the measuring-roll 65, beneath the rod 64 to the first pair of rolls 26 27 and from them between the cuttingdisks 21 and 25, by which the web of paper is slit into longitudinal strips, which are conducted between the second pair of rolls 26 and 27, and the severed strips are then conducted in the usual manner to the windingrolls 31, 32, and 33. After the web of paper has been carried through the machine the speed of the withdrawing-rolls is then regulated relatively to th'e speed of the cutting mechanism, in order that the web of paper may be withdrawn from the coil at the proper speed to supply the cutting mechanism and provide the loosely-hanging loop 67, and when the speed of the withdrawing-rolls has been thus adjusted the speed of the entire machine is regulated to suit the character of the paper to be out and the increasing size of the coils on the winding-rolls 31, 32, and 33 by means of the screw-threaded rod 8 and rock- IOO IIO

ing frame 7, by which the driving-disks 11 are moved toward or away from the center of the friction-disks 12, so that the disks 11 11, revolving at a constant speed, will impart a variable speed to the disks 12 12 and through them to the entire operating parts of the machine. The rolls 26 27, cutting mechanism, and winding-rolls 31, 32, and 33 are like those now employed in machines of this class and form no part of my present invention; but I deem it to be new to provide the operating mechanism of the machine with the driving device by which a. variable speed may be given to the machine, and I also deem it to be broadly new to feed the paper from a loose loop which has been withdrawn from the coil by a withdrawing mechanism which is capable of a varying speed and bringing it into IZO alinement with the cutting mechanism. The employment of a measuring-roll and the particular form of the friction device above described are in themselves old; but I believe it to be new to combine these devices in a paper-slitting machine whereby the web of paper having been withdrawn from a coil into a loose loop is subsequently given the requisite tension and subjected to a measuring device. The rolls 3l, 32, and 33 are provided with the loose pulleys 68, 69, and 70, which are held in frictional contact with iianges 7l on the winding-rolls by nuts 72, held on the screw-threaded ends of the rolls and having interposed spiral springs by which the pressure of the pulleys against the friction-flan ges is varied. The rotation of the rolls 31, 32, and 33 is therefore caused by the frictional contact of the pulleys with the flanges, allowing the pulleys to slip when the tension of the paper becomes too great. As the winding begins, the diameter of the coils on the rolls 31, 32, and 33 is small, and the friction between the driving-pulleys and their disks is capable of overcoming a considerable tension on the paper strip; but as the coils increase in size a slight tension on the paper will cause the pulleys to slip. AIt is therefore necessary to wind the beginning of the coils slowly and with care, especially with poor or thin paper; but as the coils increase in size the speed of the machine eanbe greatly increased, and I believe it to be new to provide in a paperslitting machine means whereby the speed may be varied as the coils increase in size.

What I claim as my invention, and desire to secure by Letters Patent, is-

1. In a paper-slitting machine the combination with a slitting mechanism, and a d riving-shaft, of a rocking frame pivoted concentrically with the driving-shaft, yielding beveled disks carried by said frame, means for rocking said frame and holding it in a Xed position, means for rotating said disks, a driven disk inclosed between said yielding disks and means for connecting said driven disk with the paper-slitting mechanism, substantially as described.

2. The combination ofa slitting mechanism and a drivin g-shaft, of intermediate mechanism for positively varying the speed of the slitting mechanism relatively to said drivingshaft and consisting of a driven beveled disk inclosed between a pair of beveled drivingdisks, a spring for crowding the driving and driven disks into frictional contact,and means for varying the relative position of the driving and driven disks, whereby the speed of the driving-disk is varied, substantially as described.

3. In a paper-slitting machine, a slitting mechanism, a pair of rotating feed-rolls by which the paper is fed to the slitting mechanism, a pair of rotating withdrawing-rolls by which the paper is withdrawn from a coil, and means for varying the speed of said Withdrawing-rolls relatively to the speed of said feed-rolls, substantially as described.

4. In a paper-slitting machine, the combination of a slitting mechanism, a feeding mechanism by which the paper is presented to the slitting mechanism, means for driving said feeding and said slitting mechanisms, a pair of rolls by which the paper is withdrawn from the coil in advance of said feeding mechanism, means for driving said withdrawingrolls, and means for varying the speed of said withdrawing-rolls independently of the speed of said feeding mechanism, substantially as described.

5. In a paper-slitting machine, the combination with the following instrumentalities arranged in the order named, withdrawing mechanism for withdrawing the paper from a coil, feeding mechanism for presenting the paper to the slitting mechanism, a slitting mechanism and a winding mechanism, of means for varying the speed of saidl mechanisms, and means for independently varying the speed of said withdrawing-rolls, substantially as described.

6. In a paper-slitting machine, the combination of a slitting mechanism, a pair of feedrolls for feeding the paper to the slitting mechanism, a pair of withdrawing-rolls for withdrawing the paper from a coil, means for varying the speed of said withdrawing-rolls relatively to the speed of said feed-rolls, whereby a slack loop is formed in the paper in advance of the feed-rolls, means applied to the edges of the slack paper for bringing the paper into alinement with the slitting mechanism, substantially as described.

7. In a paper-slitting machine, the combination of slitting mechanism, a pair of feedrolls, a pair of withdrawing-rolls for withdrawing the paper from a coil into a slack loop, means for bringing the slack paper into ,alinement with the slitting mechanism, and

means for imparting a tension to the paper as it is presented to the feed-rolls, substantially as described.

8. The combination with a slitting mechanism, of means for feeding paper to said slitting mechanism, means for withdrawing the paper from a coil into a loop, and means for alining the said paper in said loop between the withdrawing and feeding mechanisms, substantially as described.

9. The combination with means for withdrawing the paper from a coil into a loop, a pair of disks held in contact with the opposite edges of said loops, said disks having their opposing surfaces beveled, whereby the edges of the loop are brought into alinement with the center -of the disks, substantially as described.

Dated this 4th day of September, 1899.

CLARENCE WV. HOBBS.

Witnesses:

RUFUs B. FOWLER, M. C. PRICE.

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